Alberta commission takes comment on ENMAX power plant expansion

The Alberta Utilities Commission is taking comment until April 18 on an application from ENMAX Energy Corp. to expand the Calgary Energy Centre power plant under the Hydro and Electric Energy Act.

The new plant capacity would consist of three 66-MW natural gas-fired generators for total new capacity of 197 MW. The power plant is located in the northeast quarter of Section 35, Township 25, Range 29, west of the Fourth Meridian, adjacent to Stoney Trail and 68th Street N.E.

Calgary Energy Centre No. 2 Inc. (CEC2) is proposing to expand operations at the 320-MW natural gas-fueled, combined-cycle Calgary Energy Centre (CEC) located in Calgary, Alberta, by adding these three new natural gas-fueled turbine generators to the same site. CEC2 said in a December 2015 application filed with the commission that is a wholly-owned subsidiary of ENMAX Generation Portfolio Inc. (EGPI), which is in turn a wholly-owned subsidiary of ENMAX Energy Corp. (EEC). EEC is a wholly-owned subsidiary of ENMAX Corp.

The proposed facility will be called the Calgary Energy Centre Expansion Project (CECEP). The CECEP is being developed to meet peaking demand in the Alberta Interconnected Electric System (AIES) beginning in June 2019 and is expected to be in operation for approximately 35 years.

Depending on peaking demands, it is expected that the CECEP would operate approximately 15% to 45% of the time. The CECEP will be located at the north end of the 11.2-hectare site occupied by the existing CEC. The integration between the facilities is limited to the utilization of existing staff, demineralized water, potable water, sewer interconnection, natural gas interconnection, and sharing of common areas such as administration and warehousing. The CEC and CECEP do not share resources that will limit the operations of one facility due to the operations of the other.

The technologies considered for the CECEP are some of the best gas turbine technologies currently available in the market with total nominal output between 130 MW to 197 MW (153 to 232 MVA based on a 0.85 power factor).

This simple-cycle facility will use natural gas as the primary fuel. CEC2 has been in discussions with NOVA Gas Transmission Ltd. (NGTL), via TransCanada, regarding the gas supply to CECEP.

A project contact is: Grant Weismiller, Vice President, Regulatory Applications, (403) 514-3105, gweismiller@enmax.com.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.